helter-skelter vs higgledy-piggledy

helter-skelter

noun
  • Confusion or turmoil. 

  • A helical fairground slide. 

adj
  • Carelessly hurried and confused. 

adv
  • In confused, disorderly haste. 

higgledy-piggledy

noun
  • A disordered jumble; a confusion. 

  • A double-dactyl; a short poem with eight lines in dactylic meter. 

  • Any of various word games using rhyming compounds or dactylic words or phrases. 

adv
  • In a confused, disordered, or random way. 

adj
  • In utter disorder or confusion; mixed up. 

How often have the words helter-skelter and higgledy-piggledy occurred in a corpus of books? (source: Google Ngram Viewer )